On Sat, 22 Oct 2011, Greg King wrote: > From: "William Levak"; on Sat., October 22, 2011; at 01:11 AM -0400 >> > >> On Fri, 21 Oct 2011, Ed Johnson wrote: >> >>> I have a SFD 1001 and it used DS/DD diskettes, NOT HD (High Density) >>> diskettes. >> >> The drive mechanism on the SFD 1001 is a Quad Density drive, >> compatible with DD, but not HD. > > "Quad" was a marketting gimmick. It wasn't related to single- and > double-density. It meant that the track density, not the bit density, > was "doubled". Quad density has the same capacity as HD, but supports the same magnetic coating used in DD, except finer grain particles. HD uses a magnetic coating with a stronger magnetic field, and therefore, not campatible with DD. wlevak@sdf.lonestar.org SDF Public Access UNIX System - http://sdf.lonestar.org Message was sent through the cbm-hackers mailing listReceived on 2011-10-26 05:00:03
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